I have been to two of them some years ago. A shooter with ANY level of marksmanship will learn a bunch, given the right instructors. Enter the course with an open mind that is willing to learn. This course has been updated over the years...I hear...for the best.
Learn what they have to teach. Then,for your application,use what you need, then file the rest in the back of your memory for future apps.
You will definitely come away a much better shooter. --- SAWMAN